Method of building up bearings or the like and composition for use therein



Feb. 7, 1928. y

.ms: nugagmgw J v I 5&3 2.

INVENTOR. meg-5 M fi'fk A TTORNEYS.

Patented Feb. 7, 192s.

UNITED STATES 12,658,173 PATENT OFFICE.

GEORGE W. PERKS, OF AKRON, OHIO.

METHOD OF BUILDING UP BEARINGS OR- THE LIKE AND COMPOSITION FOR USE THEREIN.

Application tiled January 26, 1927, Serial 110,163,812. Renewed May 27, 1927.

The present invention relates to a new and useful method of building up worn hearings or similar device to fill up depressions or worn spots therein and to restore the bearing.

6 to its approximate original contour without necessitating the removal of the bearing or replacement of the ori inal parts thereof. While the inventionis described as particularly adapted for the restoration of worn N) and loose bearings for rotatin shafts, it is of wide application and may be applied to metal fittings or connections of all kinds where the metal parts become worn or loose and require refitting.

I The invention also has for its object the provision of an improved composition or mixture for use in building up hearings or the like.

' The advantages of the invention are that the bearin s or fittings are repaired in situ and with ittle labor or expense. In addition a superior fitting is obtained. In fact,

in many instances a better bearing is obtained than. the original bearing or fitting.

' By practising the method of the present invention it'is possible also to obtain a selflubricating bearing or fitting, and one which will outlast the original bearing or fitting.

For the purpose of illustration, the drawings show the method of applying the renewed or refinished-bearin to a babbitted shaft hearing), it being un erstood that the I invention is reader in soopeand its possibilities in all sorts of metal work or machinare unlimited.

n the drawings:

Figure 1 is a sectional view through a shaft bearing showing the method of buildin up the worn babbitt about the rotation sha t;

Figure 2 is an enlarged fragmentary section through a refinishe bearin and Fi ure 3 is an enlarged view 0 the metallic particles which form the body or base of the renewed bearin material.

In the drawing 1 represents a rotating shaft and 2 the housing. A babbitt lining for the shaft bearing is mdicated at 3.

When the shaft bearing becomes loose or worn a hole 5 is bored at any convenient to place through the housing for the bearing,

or, if desired, the lubrication hole may be used for the pur oses of the invention. To the hole 5 is attac ed a conduit 6 which leads from a reservoir or storage supply of the 6 mixture 7 used for rebuilding the bearing.

. attempte The mixture is forced through the opening into the loose hearing by a force pump or piston 8 which is designed to apply adequate pressure to the mixture and cause itto flow into the bearing, where it 'collects-in the depressions or loose spots in the bearing sleeve.

The mixture embodying the invention and which is used for this purpose comprises a sufiicient quantity of soft metal, either copper, lead, zinc, or other suitablemetal, which is of a particular and peculiar spongy structure. I-Ieretofore finely divided or powdered metal has been obtainable only in the form of a powder in which the individual particles have been granular orin the form of minute, solid, round or ovoid bodies without any ready ability to knit together or form in a coherent or compact mass with slight pressure. It is possible to obtain aspon form of powdered or finely divided metal, y

the use of which the invention herein described is possible.

Minute particles of metal 9 are obtainable which constitute a material havin physical characteristics and peculiar and istinetive properties difierent from other forms of powdered or finely divided metal. Copper,

lead, zinc and many other metals are obtainable, in which the finely divided articles are soft and sponge-like and provi ed with numerous small tentacles or projections by which the individual particles will knit together. Particles of metal in the form described, with even a' slight de ee of pressure when pressed together wi l adhere and form flakes, sheets, or blocks which are sub stantially homogeneous, and it is due to this property of the metal that the bearings may e built up by the use of the present process. Microsco ic views of particles 9 of metal are the drawings.

In forming the mixture the desired proportions of metals are mixed to ether. with a fluid vehicle or carrier, prefera ly oil or a similar substance. The metals which ma be used vary considerably in accordance wit the particular uses to which the process is to be applied, copper, zinc, lead or other metals being employed or any suitable admixture of two or more of the same. Certain proportions of copper and lead have been used to be illustrated in Figure 3 of with considerable success With the mix- I ture may be employed a suitable solid lubricant such as graphlte.

Q a v 7 1,658,173

When the mixture of metal, carrier and lubricant to be used is applied to the'bears in with such compression as may be requlred, the mixture will flow into the crevices or low spots of thebearing and deposit the solid particles carried by it, the carrier seeping out through the hearing. The homogeneous disintegrated metal in the form of the minute particles which has been de- 10 scribed having been deposited within the low spots will build up the bearing approximate- 1y to its original contour and virtually estabhsh a new bearing in its place. The new film or bearing surface is indicated bythe 16 numeral 10 in the drawings.

In case of a bearing, or similar device th movement of the parts of the bearing will compact the metal particles together so that a smooth even bearing will be obtained. If

20 graphite or other lubricant is to be employed in the mix, the particles thereof will remain and be embedded within the bearing. In the, case of spring shackle bushings or other parts of automobiles the looseness between 2 the parts will be taken up and close fitting "bearing surfaces will be readily obtainable.

'What is claimed is:

1. Acompositionfor use in building up bearings or the like, said composition in- ",cluding one or more fiocculent metals, the

particles of which have numerous tentacles extending in many directions, a solid lubrinit tothat the composition will be flowable under pressure into abearing wherein the particles of metal will knit together by interlocking of the tentacles.

3. A composition for use in building up bearings or the like, said composition including one or more flocculent metals, the particles of which have numerous tentacles extending in many directions, and a vehicle for suspending the metals so that the composition .will be flowable into a bearing wherein the particles of metal will knit together by interlocking of the tentacles.

4. A composition comprising one or more flocculent metals having numerous tentacles thereon, and .a vehicle for suspending the metals so as to be flowable.

GEORGE W. PERKS. 

